Meaning:
The ground forces actually fighting in a war or conflict at the time of speaking, rather than troops not engaged or being transported to the fighting.
Examples:
- These animals can replace thousands of boots on the ground.
- I like my boots on the ground, thank you.
- Sir, I told you we need more boots on the ground.
- Admiral's decided to put some boots on the ground.
- Just to put boots on the ground.
- Since we can't see by air, we need boots on the ground.
- A lot of boots on the ground you're askin' for.
- We need another set of boots on the ground.
- It's time to get boots on the ground.
- It's time to get boots on the ground.