How does a Georgist country wage war?

Main points of interest:

1. Reduced tax base from land loss and devastation.
2. How would the country switch to a war economy, that's over 50% of GDP, when land taxes would afford a lot less?
3. Reduced incentive to stay and fight due to dissipation of land value (everybody owns it so nobody does)? Historically people stay on and fight to protect their land, as they don't have any other and don't have much else. Under LVT they are renters. They still have the building, but that's a lot less than what they have now.

Maybe we can use Ukraine as an example?