Here is what I can find on Badr > Hadiths:
"The Prophet had suddenly attacked Bani Mustaliq without warning while they were heedless and their cattle were being watered at the places of water. Their fighting men were killed and their women and children were taken as captives" (Bukhari 46:717)
Book 008, Number 3371:
Abu Sirma said to Abu Sa'id al Khadri (Allah he pleased with him): 0 Abu Sa'id, did you hear Allah's Messenger (may peace be upon him) mentioning al-'azl? He said: Yes, and added: We went out with Allah's Messenger (may peace be upon him) on the expedition to the Bi'l-Mustaliq and took captive some excellent Arab women; and we desired them, for we were suffering from the absence of our wives, (but at the same time) we also desired ransom for them. So we decided to have sexual intercourse with them but by observing 'azl (Withdrawing the male sexual organ before emission of semen to avoid-conception). But we said: We are doing an act whereas Allah's Messenger is amongst us; why not ask him? So we asked Allah's Mes- senger (may peace be upon him), and he said: It does not matter if you do not do it, for every soul that is to be born up to the Day of Resurrection will be born.
Here are other hadiths/ verses on war:
Allah's Messenger called Ali [and said]: “Proceed on and do not look about until Allah grants you victory,” and Ali went a bit and then halted and did not look about and then said in a loud voice: “Allah's Messenger, on what issue should I fight with the people?” Thereupon he (the Prophet) said: ”Fight with them until they bear testimony to the fact that there is no god but Allah and Muhammad is his Messenger…” (Sahih Muslim 5917)
But when the forbidden months are past, then fight and slay the Pagans wherever ye find them, and seize them, beleaguer them, and lie in wait for them in every stratagem (of war); but if they repent, and establish regular prayers and practice regular charity, then open the way for them (9:5)
and here are some quotes from Ibn Ishaq on other matters of war:
If they accepted then he was to accept it from them, and if they declined he was to fight them. So Khalid set out and came to them, and sent out riders in all directions inviting the people to Islam, saying, “If you accept Islam you will be safe.” So the men accepted Islam as they were invited. (Ibn Ishaq/Hisham 959)
We met the workers of Khaybar coming out in the morning with their spades and baskets. When they saw the apostle and the army they cried, “Muhammad with his force,” and turned tail and fled… The apostle seized the property piece by piece… (Ibn Ishaq/Hisham 757)
When the apostle raided a people he waited until the morning. If he heard a call to prayer he held back; if he did not hear it he attacked. We came to Khaybar by night, and the apostle passed the night there; and when morning came he did not hear the call to prayer, so he rode and we rode with him. (Ibn Ishaq/Hisham 757)
There are certainly alot of cases where Muhammad was acting as the aggressor and unnecessarily hostile to people not immediately involved in the wars (banu Qurayza for example).
Topic: muhammad's role as a general