[mason240]

Yes, actually this was a frequent occurrence in Afghanistan. Soldiers or Marines would be posted in small numbers in a remote COP in the mountains. Resupplying these troops would require more soldiers then were actually in the COP, and the resupply missions were often more dangerous than the mission of the COP itself (because it is easier to ambush a convoy of trucks than attacked an outpost).

[jt2190]

  > Resupplying these troops would require more soldiers 
  > then were actually in the COP...

Yes. In general the ratio is, I think, 10 support soldiers to one combat soldier. The logistics required to keep an army in the field half way around the world is enormous.