Were there really piles of spent artillery shells littered across the battlefields of WW1? If so, what'd they do with them all after the Armistice? - Quora

What happens to old artillery shells after they're fired? - Quora

Were artillery and mortars widely used as in WW1 in WW2? - Quora

Were there really piles of spent artillery shells littered across the battlefields of WW1? If so, what'd they do with them all after the Armistice? - Quora

What was the most intense artillery barrage in World War 1? - Quora

Why didn't WWI fire artillery units with a high volume of smoke

Is it true that artillery rained for weeks in WW1? - Quora

Were the howitzer, about 100mm brass shell cases from WW1, reused

Were any empty shell casings reloaded during WW2? If not, why not? - Quora

Why didn't WWI fire artillery units with a high volume of smoke