With that being said a lot of the Aikido moves look very similar to sword slashes, which would have come from the battlefield.
I can eailsy maim someone in Aikido or kill them./quote]
I agree a lot of movements in Aikido you could easily Maim or kill someone, but then again, it really wouldnt be "aikido" any more, would it? Nor very likely an attitude taken by a Buddhist (which Osensei was definitely not). there is much research regarding the Sword and Jo in Aikido, and remember AikiJo and AikiKen are there to teach one Aiki Principles not Swordsmanship, let alone Koryu Swordsmanship. Stan Pranin has done much research on this "osensei as master of mulitple art myth" and I would direct anyone to
www.aikidojournal.com for further reading.
In aikido terminology we do use the phrase 'cut' instead of 'throw'. So I do agree that the moves are very similiar to sword slashes, that although does not show that ergo it came from the battlefield. For example, Takeda Sokaku practiced Ono ha Itto ryu swordsmanship, yet there is little of that ryu in DTR, and some have even argued his style was somewhat unorthodox as he used one handed techniques with the sword. As this (DTR) was the main art of Aikido history, Ono ha would ergo seem to have more influence but it doesn't. Our stance is supposedly taken from Yagyu Shinkage ryu, and Osensei briefly studied Kashima Shinto ryu, at the Kobukan, I believe K. Ueshiba did more of this. Again check Mr. Pranins research. Now Saito's Aikiken re: Kumitachi's are strikingly similiar to Katori shinto ryu. Check out Aikinews 2nd Friendship seminar for this.
Also look at how Kata is viewed in the Koryu world. It isn't so much a study of technique but a study of Human relationships in conflict. Aikido still tries to maintain this view in its training. And you still here it in the way we express our teachings. "keep relaxed, feel for tension, maintain center, don't become fixed on the wrist/grab/attack" Again I would refer interested readers onto Diane Skoss's books on the Koryu.
This is not intended as a criticism of anyone's views of MA for self defense, merely that using Traditional Martial arts for self defense is probably one of the more narrower focus' of Martial arts applications. Since essentially they all teach you not to fight.