Editing Martin B-10 (section)

===Dutch East Indies===
[[File:COLLECTIE TROPENMUSEUM Een Glenn Martin bommenwerper van het KNIL op het militaire vliegveld Andir bij Bandoeng TMnr 60029585.jpg|left|thumb|Dutch Martin 139 at Andir in 1937]]

In the mid-1930s, the Netherlands government adopted a doctrine for defense of the [[Netherlands East Indies]], which relied on the use of land-based bombers against any attacking force, with orders for defensive fighters cancelled to pay for the bomber force. The Martin 139 was chosen in preference to the Dutch [[Fokker T.V]], as its all metal construction was considered more robust than the steel tube and fabric Fokker, while the Martin bomber was also already in production and therefore would be available sooner.<ref name="Casius p1-2">Casius 1983, pp. 1–2.</ref> Twelve Martin 139 WH-1s were ordered for the [[Royal Netherlands East Indies Army Air Force]] (ML-KNIL) in 1936, followed by 26 improved WH-2s in March 1937, sufficient bombers to equip a Group of three squadrons.<ref name="Casius p2">Casius 1983, p. 2.</ref> In December 1937, an order was placed for 39 Martin 139 WH-3s, followed by an order for 40 Martin 139 WH-3As in November 1938. Two more Martin 139 WH-3As were ordered in July 1939 to replace aircraft lost during delivery. The last of these attrition replacement aircraft was delivered in March 1940, including the last Martin B-10/139 built.<ref name="Casius p3">Casius 1983, p. 3</ref> On the outbreak of war with Japan in December 1941, about 58 Martins (WH-3 and WH-3As) were operational with six squadrons, with about 20 more of the older variants in reserve.<ref>Shores, Cull & Izawa 1992, pp. 59–60</ref> B-10s of the ML-KNIL served in the [[Dutch East Indies campaign|defense of the Dutch East Indies]].

During the start of [[Pacific War]], Dutch Martin units were as follows:<ref name="Oktorinop42">Oktorino 2019, pp. 42</ref>
*''Ie Vliegtuiggroep'' (VLG-I) based on [[Husein Sastranegara International Airport|Andir Airfield]], [[Bandung|Bandoeng]] which consisted of ''1e Afdeling'' (1-VLG-I) and ''2e Afdeling'' (2-VLG-I), each has nine Martin 139WH-3/3A with additional two aircraft as reserve. Each ''afdeling'' has a detachment during the war, with the ''Patrouille'' Butner of 1-VLG-I stationed at [[Juwata International Airport|Tarakan]] and ''Patrouille'' Cooke of 2-VLG-I stationed at [[West Kutai Melalan Airport|Samarinda II Airfield]], [[West Kutai Regency|Melak]].
*''IIe Vliegtuiggroep'' (VLG-II) based on [[Abdul Rachman Saleh Airport|Singosari Airfield]], [[Malang]] which consisted of ''1e Afdeling'' (1-VLG-II) with nine WH-3/3A with three additional reserves and three WH-2. During the war, four ''patrouille'' consisted of three aircraft plus a reserve were created from 1-VLG-II, with the crews mobilized from [[Suryadarma Air Force Base|Kalidjati]] flight school.
*''IIIe Vliegtuiggroep'' (VLG-III) based on [[Halim Perdanakusuma International Airport|Tjililitan Airfield]], [[Batavia, Dutch East Indies|Batavia]] which consisted of ''1e Afdeling'' (1-VLG-III) and ''3e Afdeling'' (3-VLG-III), each equipped with nine WH-3/3A with two additional reserves, and ''2e Afdeling'' (2-VLG-III) with nine WH-2 with two additional reserves. ''7e Afdeling Bommenwerpers'', a reserve unit mobilized on 15 December 1941, were placed under VLG-III and consisted of one WH-2, two WH-3 and six WH-3A.
[[File:AWM 011293.jpg|thumb|Dutch Martin Model 166 over Malaya in January 1942]]

In efforts to reinforce the British defense of the Malay Peninsula, the Dutch East Indies sent some ML-KNIL squadrons. Included were 22 Martin 139s from VLG-III that were organized into three squadrons, which arrived at Singapore on 9 December 1941. Due to a lack of coordination, British AA mistook the Dutch Martins for enemy aircraft and engaged them as they neared Singapore. The Martins were then stationed at [[Sembawang Air Base|Sembawang]].<ref>Oktorino 2019, pp. 82–83</ref> In early January 1942, Dutch Martins along with British [[Bristol Blenheim|Blenheim]] bombers sortied over the west coast of Malaya to halt the Japanese advance.<ref>Oktorino 2019, pp. 84–85</ref> On 8 January, nine Martin and four Australian [[Lockheed Hudson|Hudson]] attacked a suspected Japanese seaplane tender anchored offshore in South China Sea, but the results were inconclusive. In the next day, nine Martin "quite successfully" bombed several Japanese ships unloading cargo at [[Kuantan]].<ref>Oktorino 2019, pp. 93 & 96</ref> Two Martins were shot down by the Japanese near [[Penang]] on 1 January, while a further four Martins were lost while attacking Japanese forces on the [[Muar River]] on 19 January. On the same day, Dutch fighter squadrons were withdrawn to Sumatra, while the Martins were also withdrawn to Java three days later.<ref>Oktorino 2019, pp. 99</ref>