▁official ▁permission ▁from ▁the ▁government , ▁like ▁the ▁Independent ▁High land ▁Comp an ies ▁it ▁was ▁not ▁considered ▁an ▁official ▁regiment ▁of ▁the ▁line ▁of ▁the ▁British ▁Army . ▁ ▁Jacob ite ▁rising ▁of ▁ 1 7 4 5 ▁ ▁On ▁ 2 0 ▁March ▁ 1 7 4 6 ▁a ▁det achment ▁of ▁the ▁Campbell ▁of ▁Ar gy ll ▁milit ia ▁was ▁defeated ▁at ▁the ▁Sk irm ish ▁of ▁Keith . ▁From ▁the ▁ 2 0 ▁March ▁to ▁ 3 ▁April ▁ 1 7 4 6 , ▁ 3 0 0 ▁men ▁of ▁the ▁Campbell ▁of ▁Ar gy ll ▁milit ia ▁helped ▁in ▁the ▁successful ▁defense ▁during ▁the ▁Sie ge ▁of ▁Fort ▁William . ▁ ▁Tw elve ▁companies ▁of ▁the ▁Campbell ▁of ▁Ar gy ll ▁milit ia , ▁led ▁by ▁John ▁Campbell , ▁ 5 th ▁Duke ▁of ▁Ar gy ll , ▁fought ▁against ▁the ▁Jacob ites ▁at ▁the ▁Battle ▁of ▁F alk irk ▁Mu ir ▁but ▁were ▁defeated . ▁Four ▁companies ▁of ▁the ▁Campbell ▁of ▁Ar gy ll ▁milit ia , ▁commanded ▁by ▁the ▁ 5 th ▁Duke ▁of ▁Ar gy ll , ▁fought ▁for ▁the ▁British ▁Government ▁at ▁the ▁Battle ▁of ▁C ull oden ▁in ▁ 1 7 4 6 ▁where ▁the ▁Jacob ites ▁were ▁defeated . ▁During ▁the ▁battle ▁the ▁Ar gy ll ▁milit ia ▁delivered ▁dev ast ating ▁mus ket ▁fire ▁on ▁the ▁right ▁fl ank ▁of ▁the ▁Jacob ite ▁army . ▁Only ▁one ▁member ▁of ▁the ▁Ar gy ll ▁milit ia ▁was ▁returned ▁as ▁a ▁cas ual