Squads?!? 
The tactical group is called a
section. A random collection of blokes doing fatigues, square-bashing etc. is termed a
squad. Hence the name 'squaddies' that the British soldiers ironically apply to themselves.
(Bet you can tell I got an ear-bashing from an NCO when I used the 'squad' term as a fluffy new guy back in the 1970s!
)
Just choose one a support section that has a LAW such as ILAW (#621, say) when purchasing the formation. Or buy an inf-AT formation or 2 to attach to the company for bunker bashing duties?
Plus, when the new release comes out, if you have the full CD game then you can always use the 'change all' function in the campaign upgrade screen or scenario designer to change the support sections to one of the NATO formation style ones of your choice, in one easy mass replacement.
Cheers
Andy