# Why Tactical Decision Games Work - Commoncog
**URL:** https://forum.commoncog.com/t/why-tactical-decision-games-work-commoncog/3687
**Category:** Blog Comments
**Created:** [August 25, 2026, 11:23am UTC](https://forum.commoncog.com/t/why-tactical-decision-games-work-commoncog/3687 "2026-08-25T11:23:05Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@cedric](https://forum.commoncog.com/u/cedric)
#### Post date: [August 25, 2026, 11:23am UTC](https://forum.commoncog.com/t/why-tactical-decision-games-work-commoncog/3687/1 "2026-08-25T11:23:05Z")
Two weeks ago John Schmitt ran a Tactical Decision Game (TDG) for Commoncog members. A TDG is an accelerated expertise training method Schmitt [developed for the US Marine Corps more than 30 years ago](https://commoncog.com/tactical-decision-game-john-schmitt/). It’s still widely used — in fact it is one of the primary pedagogical methods across all of the Corps’ schools. For most participants who attended the session, the TDG was the first accelerated expertise exercise they’ve ever experienced.
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This is a companion discussion topic for the original entry at [https://commoncog.com/why-tactical-decision-games-work/](https://commoncog.com/why-tactical-decision-games-work/)
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### Author:  [@cedric](https://forum.commoncog.com/u/cedric)
#### Post date: [August 25, 2026, 5:39pm UTC](https://forum.commoncog.com/t/why-tactical-decision-games-work-commoncog/3687/2 "2026-08-25T17:39:54Z")
No prizes for realising that this essay follows a Pain-Dream-Fix structure, as I’ve outlined [elsewhere](https://forum.commoncog.com/t/how-to-write-good-for-the-internet-the-commoncog-way/3545). 😉
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### Author:  [@cedric](https://forum.commoncog.com/u/cedric)
#### Post date: [August 25, 2026, 5:39pm UTC](https://forum.commoncog.com/t/why-tactical-decision-games-work-commoncog/3687/3 "2026-08-25T17:39:54Z")