I had both basic and Armor AIT at Ft. Knox in '73. The M1911A1 and .45 acp "grease gun" were our issued personal weapons.
I qualified expert with the 1911A1 in basic. I'd never really shot pistols much before, but it seemed to fit me just right.
I continued to carry a 1911 daily for over 25 years, until recent societal conditions seemed to indicate the carry of hi-cap pistols and multiple hi-cap reloads more prudent.
I still own several 1911's, and they are my hands down all time favorite pistols!