Tactics
Free to read here, from Project Gutenberg.
A Treatise on the Tactical Use of the Three Arms: Infantry, Artillery, and Cavalry
Tactics, Volume 1 (of 2). Introduction and Formal Tactics of Infantry
The Defence of Duffer's Drift
Lectures on Land Warfare; A tactical Manual for the Use of Infantry Officers
Technique of modern tactics
A General's Letters to His Son on Minor Tactics
The Attack in Trench Warfare: Impressions and Reflections of a Company Commander
Combat lessons, no. 1, rank and file in combat
