Editing Charlton Athletic F.C. (section)

===Early history (1905–1946)===
Charlton Athletic was formed on 9 June 1905<ref name = "Charlton Athletic - Club History"/> by a group of 14 to 15-year-olds in East Street, Charlton, which is now known as Eastmoor Street and no longer residential.

Contrary to some histories, the club was founded as "Charlton Athletic" and had no connection to other teams or institutions such as East St Mission, Blundell Mission or Charlton Reds; it was not founded by a church, school, employer or as a franchise for an existing ground. Charlton spent most of the years before the First World War playing in local leagues but progressing rapidly, winning successive leagues promotions eight years in a row. In 1905–06 the team played only friendly games but joined, and won, the Lewisham League Division III for the 1906–07 season. For the 1907–08 season the team contested the Lewisham League, Woolwich League and entered the Woolwich Cup. It was also around this time the Addicks nickname was first used in the local press although it may have been in use before then. In the 1908–09 season Charlton Athletic were playing in the Blackheath and District League and by 1910–11 had progressed to the Southern Suburban League. During this period Charlton Athletic won the Woolwich Cup four times, the championship of the Woolwich League three times, won the Blackheath League twice and the Southern Suburban League three times.{{citation needed|date=September 2021}}

They became a senior side in 1913, the same year that nearby [[Arsenal F.C.|Woolwich Arsenal F.C.]] relocated to North London.<ref name="Charlton Athletic - Club History">{{cite web
| title = Charlton Athletic&nbsp;– Club History
| url = http://www.cafc.co.uk/page/History/0,,10267,00.html
| publisher = Charlton Athletic FC
| access-date = 20 September 2011
| url-status = dead
| archive-url = https://web.archive.org/web/20110917171040/http://www.cafc.co.uk/page/History/0%2C%2C10267%2C00.html
| archive-date = 17 September 2011
| df = dmy-all
}}</ref>

At the outbreak of [[World War I]], Charlton were one of the first clubs to close down to take part in the "Greater Game" overseas. The club was reformed in 1917, playing mainly friendlies to raise funds for charities connected to the war and for the Woolwich Memorial Hospital Cup, the trophy for which Charlton donated.  It had previously been the Woolwich Cup that the team had won outright following three consecutive victories.

After the war, they joined the Kent League for one season (1919–20) before becoming professional, appointing [[Walter Rayner]] as the first full-time manager. They were accepted by the Southern League and played just a single season (1920–21) before being voted into the [[Football League]] along with [[Aberdare Athletic F.C.|Aberdare Athletic]]. Charlton's first Football League match was against [[Exeter City F.C.|Exeter City]] in August 1921, which they won 1–0. In 1923, Charlton became "giant killers" in the [[FA Cup]] beating top flight sides Manchester City, West Bromwich Albion, and Preston North End before losing to eventual winners Bolton Wanderers in the Quarter-Finals. Later that year, it was proposed that Charlton merge with Catford Southend to create a larger team with bigger support.{{sfn|Clayton|2001|p=30}} In the 1923–24 season Charlton played in Catford at [[The Mount stadium]] and wore the colours of "The Enders", light and dark blue vertical stripes. However, the move fell through and the Addicks returned to the Charlton area in 1924, returning to the traditional red and white colours in the process.{{sfn|Clayton|2001|p=33}}

Charlton finished second bottom in the Football League in 1926 and were forced to apply for [[re-election (Football League)|re-election]] which was successful. Three years later the Addicks won the [[Football League Division Three|Division Three]] championship in 1929<ref name="England 1928/29">{{cite web |author1=Felton, Paul |author2=Spencer, Barry |title=England 1928/1929 |url=https://www.rsssf.org/engpaul/FLA/1928-29.html |access-date=10 July 2007 |archive-url=https://web.archive.org/web/20100205200833/http://rsssf.com/engpaul/FLA/1928-29.html |archive-date=5 February 2010 |website=[[RSSSF]] |url-status=live  }}</ref> and they remained at the [[Football League Division Two|Division Two]] level for four years.<ref name="Charlton Athletic - Club History"/> After [[relegation]] into the Third Division south at the end of the 1932–33 season the club appointed Jimmy Seed as manager and he oversaw the most successful period in Charlton's history either side of [[World War II]]. Seed, an ex-miner who had made a career as a footballer despite suffering the effects of poison gas in the First World War, remains the most successful manager in Charlton's history. He is commemorated in the name of a stand at the Valley.<ref name="Soccer From The Inside">{{cite book|first=Jimmy|last=Seed|title=Soccer From the Inside|publisher=Thorsons|year=1947}}</ref>{{rp|19}} Seed was an innovative thinker about the game at a time when tactical formations were still relatively unsophisticated. He later recalled "a simple scheme that enabled us to pull several matches out of the fire" during the 1934–35 season: when the team was in trouble "the centre-half was to forsake his defensive role and go up into the attack to add weight to the five forwards."<ref name="Soccer From The Inside" />{{rp|66}} The organisation Seed brought to the team proved effective and the Addicks gained successive promotions from the [[Football League Third Division|Third Division]] to the [[Football League First Division|First Division]] between 1934 and 1936, becoming the first club to ever do so.<ref name = "Charlton Athletic - Club History"/> Charlton finally secured promotion to the First Division by beating local rivals [[West Ham United]] at Upton Park, (now the [[Boleyn Ground]]), with their centre-half John Oakes playing on despite concussion and a broken nose.<ref>Colin Cameron, Home and Away with Chalton Athletic 1920–2004 (2004), p.69.</ref>

In 1937, Charlton finished runners up in the First Division,<ref name="1936/1937 English Division 1 (old) Table">{{cite web |author1=Felton, Paul |author2=Edwards, Gareth |title=England 1936/1937 |url=https://www.rsssf.org/engpaul/FLA/1936-37.html |access-date=10 July 2007 |archive-url=https://web.archive.org/web/20100205203456/http://rsssf.com/engpaul/FLA/1936-37.html |archive-date=5 February 2010 |website=[[RSSSF]] |url-status=live  }}</ref> in 1938 finished fourth<ref name="1937/1938 English Division 1 (old) Table">{{cite web |author1=Felton, Paul |author2=Edwards, Gareth |title=England 1937/1938 |url=https://www.rsssf.org/engpaul/FLA/1937-38.html |access-date=10 July 2007 |archive-url=https://web.archive.org/web/20121222101344/http://www.rsssf.com/engpaul/FLA/1937-38.html |archive-date=22 December 2012 |website=[[RSSSF]] |url-status=live  }}</ref> and 1939 finished third.<ref name="1938/1939 English Division 1 (old) Table">{{cite web |author1=Felton, Paul |author2=Edwards, Gareth |title=England 1938/1939 |url=https://www.rsssf.org/engpaul/FLA/1938-39.html |access-date=10 July 2007 |archive-url=https://web.archive.org/web/20100205203350/http://rsssf.com/engpaul/FLA/1938-39.html |archive-date=5 February 2010 |website=[[RSSSF]] |url-status=live  }}</ref> They were the most consistent team in the top flight of English football over the three seasons immediately before World War II.<ref name = "Charlton Athletic - Club History"/> This continued during the war years and they won the [[Football League War Cup]] and appeared in finals.