I dug around in my book.
the 226th FA was a non-divisional battalion of 155mm towed howitzers. They served on Leyte (20 Oct 1944) and Okinawa (14 June 1945) and arrived in Los Angeles 20 Jan 1946 and disbanded the next day.

I've not been able to find anything else. Small units like this that were not part of any larger organization are hard to find anything on.

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Best Regards,
JW