Editing Robert E. Lee (section)

==Military engineer career==
[[File:Robert E Lee 1838.jpg|thumb|upright=.8|right|Lee at age 31 in 1838, as a Lieutenant of Engineers in the U.S. Army]]
On August 11, 1829, Brigadier General [[Charles Gratiot]] ordered Lee to [[Cockspur Island]], [[Georgia (U.S. state)|Georgia]]. The plan was to build a fort on the marshy island which would command the outlet of the [[Savannah River]]. Lee was involved in the early stages of construction as the island was being drained and built up.<ref>{{harvnb|Thomas|1997|pp=57–58}}.</ref> In 1831, it became apparent that the existing plan to build what became known as [[Fort Pulaski]] would have to be revamped, and Lee was transferred to [[Fort Monroe]] at the tip of the [[Virginia Peninsula]] (today in [[Hampton, Virginia]]).{{sfn|Guelzo|2021|p=53}}

While home in the summer of 1829, Lee had apparently courted [[Mary Anna Custis Lee|Mary Custis]] whom he had known as a child. Lee obtained permission to write to her before leaving for Georgia, though Mary Custis warned Lee to be "discreet" in his writing, as her mother read her letters, especially from men.<ref>{{harvnb|Thomas|1997|p=57}}.</ref> Custis refused Lee the first time he asked to marry her; her father did not believe the son of the disgraced Light-Horse Harry Lee was a suitable man for his daughter.<ref>{{harvnb|Fellman|2000|p=33}}.</ref> She accepted him with her father's consent in September 1830, while he was on summer leave,<ref>{{harvnb|Thomas|1997|p=62}}.</ref> and the two were wed on June 30, 1831.<ref>{{harvnb|Thomas|1997|pp=64–65}}.</ref>

Lee's duties at Fort Monroe were varied, typical for a junior officer, and ranged from budgeting to designing buildings.{{sfn|Guelzo|2021|p=57}} Although Mary Lee accompanied her husband to [[Hampton Roads]], she spent about a third of her time at Arlington, though the couple's first son, [[George Washington Custis Lee|Custis Lee]] was born at Fort Monroe. Although the two were by all accounts devoted to each other, they were different in character: Robert Lee was tidy and punctual, qualities his wife lacked. Mary Lee also had trouble switching from being a rich man's daughter to having to manage a household with only one or two enslaved people.<ref>{{harvnb|Fellman|2000|pp=24–25}}.</ref> Beginning in 1832, Robert Lee had a close but platonic relationship with Harriett Talcott, wife of his fellow officer [[Andrew Talcott]].<ref>{{harvnb|Thomas|1997|p=72}}.</ref>
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| caption1 = [[Fort Monroe]], Hampton, Lee's early duty station
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| caption2 = [[Montrose, Iowa|Fort Des Moines]], Montrose, Lee's hand-drawn sketch
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Life at Fort Monroe was marked by conflicts between artillery and engineering officers. Eventually, the War Department transferred all engineering officers away from Fort Monroe, except Lee, who was ordered to take up residence on the artificial island of [[Rip Raps]] across the river from Fort Monroe, where [[Fort Wool]] would eventually rise, and continue work to improve the island. Lee duly moved there, then discharged all workers and informed the War Department he could not maintain laborers without the facilities of the fort.<ref>{{harvnb|Thomas|1997|p=75}}.</ref>
In 1834, Lee was transferred to Washington as General Gratiot's assistant.<ref>{{harvnb|Thomas|1997|pp=74–75}}.</ref> Lee had hoped to rent a house in Washington for his family, but was not able to find one; the family lived at Arlington, though Lieutenant Lee rented a room at a Washington boarding house for when the roads were impassable.{{sfn|Guelzo|2021|p=64}} In mid-1835, Lee was assigned to assist [[Andrew Talcott]] in surveying the southern border of Michigan.<ref>{{harvnb|Thomas|1997|p=81}}.</ref> While on that expedition, he responded to a letter from an ill Mary Lee, which had requested he come to Arlington, "But why do you urge my ''immediate'' return,<!-- comma in original before ampersand --> & tempt one in the ''strongest'' manner[?]... I rather require to be strengthened & encouraged to the ''full'' performance of what I am called on to execute."{{sfn|Guelzo|2021|p=66}} Lee completed the assignment and returned to his post in Washington, finding his wife ill at Ravensworth. Mary Lee, who had recently given birth to their second child, remained bedridden for several months. In October 1836, Lee was promoted to first lieutenant.<ref>{{harvnb|Thomas|1997|pp=83–84}}.</ref>

Lee served as an assistant in the chief engineer's office in Washington, D.C. from 1834 to 1837, but spent the summer of 1835 helping to lay out the state line between [[Ohio]] and [[Michigan]], in the company of Lt. [[Washington Hood]]. As a [[First Lieutenant (United States)|first lieutenant]] of engineers in 1837, he supervised the engineering work for [[St. Louis, Missouri|St. Louis]] harbor and for the upper [[Mississippi River|Mississippi]] and [[Missouri River|Missouri]] rivers. Among his projects was the mapping of the [[Des Moines Rapids]] on the Mississippi above [[Keokuk, Iowa]], where the Mississippi's mean depth of {{convert|2.4|ft|m|1}} was the upper limit of steamboat traffic on the river. His work there earned him a promotion to [[Captain (United States O-3)|captain]]. Around 1842, Captain Robert E. Lee arrived as [[Fort Hamilton]]'s post engineer.<ref>{{cite web|archive-url=https://web.archive.org/web/20110723015836/http://www.nad.usace.army.mil/fh.htm|archive-date=July 23, 2011|url=http://www.nad.usace.army.mil/fh.htm |title=Welcome to Fort Hamilton |publisher=United States Army Corps of Engineers |access-date=October 16, 2010}}</ref>