Historical clue formulations

• Disband, to Brits — 2018-04-28
• Discharge from the R.A.F. — 2014-11-07
• Brit's service discharge — 2007-12-03
• Brit's service discharge — 2003-08-01
• Disband, postwar — 1994-04-26
• Muster out of the R.A.F. — 1994-04-24