The Mad Hanar wrote...
Let's take a look at his tactics, shall we?
- Tries to attack an obviously surperior opponent head on with no strategy whatsoever.
- Instead of trying to find a way to defeat the Reapers, he chooses to throw his soldiers at the Reapers, a near certain death, to stall for a machine that no one knows how to operate.
- His grand plan in the end: Send ground forces running straight toward a Reaper and then retreat.
- Couldn't figure out a way to defeat the Luna V.I himself.
- Couldn't figure out a way to defeat simple terrorists himself.
- Sometimes he couldn't even figure out the existence of these terrorists. One of his soldiers had to hack into computers or accept information from criminals to figure it out.
...Somebody bribed his way into a job.
-The direct assault was done to divert enough attention away from the Crucible, to do enough damage to allow the Crucible to dock on the Citadel unharmed. Guerilla attacks wouldn't have done enough, and the Crucible would have been destroyed easily.
-He sends his troops to hold off Reaper forces to prevent them from taking key locations (such as ports, military bases, etc.). The Crucible is the only means of defeating the Reapers, so stalling for it is the only thing he can do. Anything else is doomed for failure. The Crucible offers the only chance of victory, slim as it may be.
-They tried to get there before Harbinger did, they were just late. And once Harbinger was there, a blitz was the only hope of getting through; hopefully there would be too many forces for Harbinger to deal with. After all, nothing was more important than getting onboard the Citadel.
-As for all these others, they're just excuses to give Shepard more sidequests.