please define 'combat' so we are on the same page.
to me it congers a military, open carry style and as such
a pair of full size 1911's is all id want.
in a SHTF city or suburban setting it may be that our thinking is in combat mode
but we might find it better to carry concealed. so perhaps a shorter 1911 ( Defender?) Sig P239/40 or 357