What does T-Day mean in Military?
This page is about the meanings of the acronym/abbreviation/shorthand T-Day in the Governmental field in general and in the Military terminology in particular.
Effective Day Coincident With Presidential Declaration of A National Emergency and Authorization of Partial Mobilization
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What does T-Day mean?
- Training Expansion Day; the effective day coincident with Presidential declaration of national emergency and authorization of partial mobilization (not more than 1,000,000 personnel exclusive of the 200,000 callup).