The Thoughts Of War were a possibly fictional piece of work written by the Romulans and found within the Eridam Papers.

One quote from the material emphasized the use of hit and run operations:

To hide is not cowardice. Neither is avoiding combat when the odds are not in your favor. It is using your limited resources to their best potential.

A second quote highlighted the use of guerilla tactics as well as well trained group attacks:

Work together. Strike fast. Hit and withdrawn before thy know what hit them.

Elements of the Thoughts Of War were incorporated into A Short History Of The First Romulan War where it provided insight into the Romulan Star Empire's starship tactics. (FASA RPG module: The Romulans)