The general admitted he mistreated a captain under his command during a three-year affair and had improper relationships with two other women. He also pleaded guilty to adultery — a crime in the military — as well as using his government-issued credit card to pay for improper trips to see his mistress and other conduct unbecoming an officer.
The 51-year-old general had been accused of twice forcing the female captain to perform oral sex during the three-year affair, but the sexual assault charges were dropped as part of the plea deal.
The Army's case against Sinclair started to crumble as questions arose about his primary accuser's credibility and whether military officials improperly rejected a previous plea deal because of political concerns.
Sinclair broke down in tears multiple times during Wednesday's hearing.
When a letter from his wife was read, Sinclair buried his head in his hands, appeared to cry and dabbed his eyes with two tissues.
In the letter, Rebecca Sinclair says she hasn't fully forgiven her husband but doesn't want the Army to punish him and his family further with a significant reduction to his pension and other benefits.
"Believe me when I tell you that the public humiliation and vilification he has endured are nothing compared to the private suffering and guilt that he lives with every day," writes Rebecca Sinclair, who hasn't attended her husband's hearings.
Sinclair broke down at several points as he read a statement to the judge, pausing to collect himself. He apologized to his family and the women with whom he admitted inappropriate relationships.
"I've been frustrated and angry, but I don't have to look any further than the mirror for someone to blame," he said. He also pointed out that Wednesday was two years to the day since his primary accuser came forward.