http://book.klll.cc/ebooks/subject/31186.opds 2025-08-06T00:38:48Z Books about Guard duty (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-06T00:38:48Z https://book.klll.cc/ebooks/54515.opds Instructions for Officers and Non-Commissioned Officers of Cavalry, on Outpost Duty Alexander Carl Friedrich von Arentschildt