sandbags lining a trench to protect army soldiers and the loophole from which the ossuary of mount cimone italy can be seen

army arsiero bag bags battlefield cimone defence defense dig ditch dug dugout enemy entrench first world war fortification foxhole great ground guard hessian hole italian italy jute loophole memorial military ossario ossuary prima guerra mondiale sacco sack sacking sandbag sandbags slit slot soldiers strategy tonezza trench trenches veneto vicenza warfare watch ww1 wwi