▁N ut r itional ▁value ▁The ▁en act ed ▁daily ▁allow ance ▁had ▁an ▁energy ▁content ▁of ▁ 2 , 4 0 0 ▁to ▁ 3 , 1 0 0 ▁k cal ▁per ▁day , ▁which ▁was ▁enough ▁for ▁g arrison ▁duty , ▁but ▁during ▁field ▁conditions ▁it ▁had ▁to ▁be ▁supp lement ed ▁in ▁order ▁to ▁give ▁sufficient ▁energy . ▁The ▁main ▁short coming ▁was ▁the ▁lack ▁of ▁fresh ▁food , ▁especially ▁fresh ▁veget ables , ▁which ▁often ▁led ▁to ▁out break s ▁of ▁sc ur vy , ▁both ▁in ▁the ▁field ▁and ▁in ▁g arrison . ▁To ▁avoid ▁this , ▁local ▁spr uce ▁be er ▁began ▁to ▁be ▁used ▁to ▁supp lement ▁the ▁r ations ▁with ▁additional ▁vit amin ▁C . ▁Spr uce ▁be er ▁was ▁not ▁consist ently ▁used , ▁however , ▁but ▁primarily ▁in ▁reaction ▁to ▁occurr ences ▁of ▁sc ur vy . ▁An ▁army ▁bre wer y ▁was ▁founded ▁at ▁Fort ▁Pitt ▁in ▁ 1 7 6 5 . ▁During ▁field ▁conditions , ▁the ▁soldiers ▁often ▁went ▁hun gry ▁as ▁the ▁supply ▁ch ains ▁could ▁not ▁be ▁maintained ▁due ▁to ▁long ▁distances , ▁primitive ▁transport ation ▁and ▁difficult ▁terrain . ▁F resh ▁food ▁was ▁also ▁easily ▁spo iled ▁during ▁hot ▁sum mers . ▁ ▁Supp lement s ▁ ▁In ▁g arrison ▁the ▁regular ▁r ation ▁was ▁supp lement ed ▁with ▁veget ables ▁from ▁gard ens ▁t ended ▁by ▁the ▁soldiers ▁during ▁their ▁spare ▁time . ▁Turn ips , ▁car ro ts ▁and ▁cab bage ▁were ▁the ▁most ▁common