stand you up for a gob of spit

[meliss]

Hi.
A Macedonian soldier received a decoration - a Bronze Lion - he doesn't deserve. "I can’t keep this," - he says. A sergeant answers him:
"As for the Bronze Lion, the time will come, believe me, when you’ll earn one for real, and the army, rumpstuffed as it is, won’t stand you up for a gob of spit.” And he pins the medallion to my cloak. “Take it now, while you’ve got it.” (The Afghan Campaign by Steven Pressfield)
Collins explains: If a boyfriend or girlfriend stands you up, they fail to keep an arrangement to meet you. If you stand up for someone or something, you defend them. But I can't understand the both of them in the same phrase.

 

[Tarheel]

Hi.
A Macedonian soldier received a decoration - a Bronze Lion - THAT he DIDN'T deserve. "I can’t keep this," - he says. A sergeant answers him:
"As for the Bronze Lion, the time will come, believe me, when you’ll earn one for real, and the army, rumpstuffed as it is, won’t stand you up for a gob of spit.” And he pins the medallion to my cloak. “Take it now, while you’ve got it.” (The Afghan Campaign by Steven Pressfield)
Collins explains: If a boyfriend or girlfriend stands you up, they fail to keep an arrangement to meet you. If you stand up for someone or something, you defend them. But I DON'T understand the both of them in the same phrase.

I think think it's related to "stand up for" something. In other words, don't count on getting one when you really deserve it. Instead, accept this one.