Book Recommended book about the artillery

[PegAsus]

Hello everyone, as the thread title says, I am looking for recommended books on artillery. I have many books on military technology, but on the subject of artillery, I have nothing so far. At the latest since Russia's attack on Ukraine, however, it has become clear how important this type of weapon still is. Unfortunately, I couldn't find a book from my usual sources that seemed worth buying. Hence the question to this forum again. My aim is to understand how these weapons work. How do you aim them? How do you hit with it? How do you load a gun? And preferably the whole spectrum, from mortars to howitzers. As I come from Germany, German would be a good language, but English would also be ok. Can anyone help?