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

Pair of WW1 British Brass Artillery Shells Dated 1915 at 1stDibs brass bombshell, brass artillery shell case for sale, ww1 artillery shells

Brass shell cases WW1. - Page 2 - Other Equipment - The Great War (1914-1918) Forum

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Help identifying this shell case Artillery - General Ammunition Discussion - International Ammunition Association Web Forum

Shell International Encyclopedia of the First World War (WW1)

Why don't armies use artillery like they did in WW2 and WW1 days? - Quora

What is the average value of a WWI or WWII artillery shell, and how do I find collectors? - Quora

Were the howitzer, about 100mm brass shell cases from WW1, reused or just wasted after having been first fired? - Quora

M101 howitzer - Wikipedia

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

Why is it called a howitzer? - Quora

Artillery Shells - Denmark