Wikipedia
("Handling of Combined-Arms Formations") was a German Army field manual published in 2 parts as : Part 1, promulgated in 1933, and Part 2 in 1934.
The original German text, which is notable for its clarity, was prepared by a group led by Colonel General Ludwig Beck (1880–1944) who was later executed by the National Socialist regime for his part in the 1944 plot against Hitler. The original publication consisted of a two-part, soft cover, pocket-sized manual, which was issued to all commissioned officers and senior non-commissioned officers. It contained basic military doctrine for the German land forces () from its first publication up to the end of World War II. The book was known by the nickname "Tante Frieda". A modified form is still in use today by the Federal German Army (). The approximate equivalent U.S. Army field manual was FM 100–5, now re-issued as FM 3–0, Operations (with later revisions) and available for download at the U.S. Army website. The British Army equivalent manual is Field Service Regulations, also available for download at the British Army website.