Not 100% sure but I think this is pretty close.

C^Fharlie^Dm boy, don't ^Dmgo to ^Dmwar, f^Dmirst b^Gorn ^Dmin f^Dmorty-fo^Fur K^Fenn^Dmedy made ^Dmhim bel^Dmieve ^Dmwe co^Guld ^Dmdo m^Dmuch mo^Fre

^FOoooh-^GOo-oo^Dmoooh-^FOo-o^Dmoooh-^Dmoo-o^Foooh L^Fill^Dmian, d^Gon't ^Dmhang your h^Dmead, l^Dmove sh^Gould ^Dmmake you f^Dmeel go^Fod In ^Funif^Dmorm y^Gou r^Dmaised a ^Dmman, who ^Dmvol-^Gun-^Dmteered ^Dmto sta^Fnd

^FOoooh-^GOo-oo^Dmoooh-^FOo-o^Dmoooh-^Dmoo-o^Foooh ^DmPlay the b^Fugle, p^Dmlay the t^Gaps and ^DmMake your m^Fothers pro^Gud ^DmRaise your r^Fifles ^Dmto the s^Gky boys ^DmFire that v^Folley lou^Gd

N^Fews was ^Dmbad ^Gon ^DmUpland ^DmAve, my t^Dmouch a^Gnd m^Dmourn o^Dmur los^Fs ^FSons reb^Dmelled, wh^Gile f^Dmathers y^Dmelled, and m^Dmoth-^Gers cl^Dmutched t^Dmhe cros^Fs

^FOoooh-^GOo-oo^Dmoooh-^FOo-o^Dmoooh-^Dmoo-o^Foooh ^DmPlay the b^Fugle, p^Dmlay the t^Gaps and ^DmMake your m^Fothers pro^Gud ^DmRaise your r^Fifles ^Dmto the s^Gky boys ^DmFire that v^Folley lou^Gd

The Lumineers - Charlie boy