Because what happens when the heavy brigades eventually get there?

Slade's heavy brigade did not make an appearance at all.

Figure they can move a heavy brigade with them, combat-loaded and ready to hit a beach somewhere.

This action left the post without any heavy armored brigades and put the base at risk of closure.

Aboard, they had the full vehicle complement for a reinforced heavy brigade.

The two basic armoured brigades at the start of the war were the light and the heavy brigade.

There's a heavy mechanized brigade doing intensive training down south.

Gino, you're going to supply me with the heavy brigade.

Every bridge had a checkpoint, every Government building a heavy brigade of guards.

The Charge of the Heavy Brigade had lasted no more than 10 minutes.