Wesley Crusher

2353: His father was killed while serving under Captain Picard
2364: Moved to the USS Enterprise-D with his mother;
2364: Granted a field commission of acting ensign, assigned to the Conn
2367: Accepted to Starfleet Academy, joined Nova Squadron
2368: Participated in a cover-up at the Academy, eventually admitted to the truth
2370: Resigned from Starfleet & joined the Travelers
2379: Briefly returned to Starfleet, served on the USS Titan, returned to the travelers
2385: Help the crew of the Protostar deal with alterations to the timeline