Dong Zhou wrote:He was an offical in Nazhou and promoted to Gong Cao, I have no idea what that is though.
I'm not saying his death was reckless, it was unlucky. As for Wei, Cao Zhen and Cao Rui were men who would not be easy to dislodge so far as to Chang A, Shu would still have supply problems and be outnumbered so as good as Pang Tong is, I think the job was too big.
Zhuge Liang would have been managing logistics from the homefront, so I don't believe that supplies would not have been an issue at all. If Pang Tong prevents Jie Ting from happening, then the majority of Wei's forces in the northwest are already engaged there, and though Cao Zhang, and Sima Yi, and Cao Rui were capable, there was a degree of animosity between them which Pang Tong may have taken advantage of. Also consider that with Shu threatening the Northwest, Wei would not have had the luxury of a withdrawal as they did when they succeeded in defeating Ma Su. That means they become much more vulnerable to attack from Wu, which Kongming no doubt would have negotiated.
Dong Zhou wrote:1) How easy would it to sneak up to Cheng Du with an army? If they are spotted, they are stranded in Shu away from their base and Liu Bei's reputation could lie in tatters. Or Liu Zhang able to shut the gates of Cheng Du, Liu Bei could find himself surrounded by Liu Zhang's generals who would give to aid their master.
I don't believe his intent was to sneak up on Chengdu, rather force an engagement, that Liu Zhang truly was not prepared for at the time. Liu Zhang was not a man of combat, and so if he marched out, he surely would have been defeated. If he allows himself to be surrounded, then he effectively let's his land be cut in half by Liu Bei's forces, severing the line of supply and communication with his forces in the north.
Not to mention Liu Bei had supporters already in Chengdu, so as soon as Liu Bei's armies show up, they throw the gates open and the city is taken with minimal loss. The armies in the north can't march back for fear of Cao Cao's forces attacking from the rear, and so too have no choice but to surrender. Pang Tong could have used the threat of Cao Cao knocking at the door, as an advantage.
This was the best plan because it required the least amount of resources to accomplish, and it provided the greatest results.
Dong Zhou wrote:2) A good plan, Shu got the pass to build upon, gets rid of two powerful generals and can begin a two pronged attack with a small advantage of surprise. If not for Liu Xun and Liu Bei's relaitve caution, might have even been done a lot earleir
Indeed it is a good plan, and as you say, Liu Bei's own character works against them.
Dong Zhou wrote:3) A workable plan, safe with the only risk being time and other powers, should do the job but it would take a long long time. I suspect he offered it as three sounds better then two
Indeed, and the swifter the defeat, the easier it is to maintain stability, Pang Tong knew this which is why it was labeled the worst of the three plans.
Dong Zhou wrote:I'm also not a plan of the "capture the visiting Liu Zhang" plan, it would have turned the people against Liu Bei and again destroyed his reputation, Liu Bei would end up fighting anyway and without the support of the common people that he had so carefully cultivated.
As I said before, Liu Bei already had supporters in the capital, and pacifying the people would have been an easy task given the reputation that he had already gained. He could have killed Liu Zhang, let the two opposing factions in Chengdu fight each other and then sweep in to clean up the rest. It was a plan that would remove his rival, weaken resistance against him, and gravitate the people's resolve for peace, which he could provide them as ruler. You have to remember that the people who's favor he cultivated, already supported him and were already following him, and viewed him as sovereign. He had nothing to lose and everything to gain by doing it.