Fascinating, OMJ!

I, of course, am one whose belief rests in the hands of past lives. I also have recovered memories which come as scenes similarly to how you have described and triggered by doing a similar activity or going through a similar emotion to that experienced in the pastlife, particularly at the time of demise.

I have dreamed, remembered, had scenes just start playing out in my mind, often in combination about the same life time.

So, in the first scene you relate, it sounds like the cannon took you out maybe, eh? The other scene with the sand-coloured building sounds like it could be Middle East.

One thing I have learned (and believe to be true) that might be relevant to your memories is that more than one life can be lived simultaneously. In other words, your soul can be in two bodies at once. Of course this relates to some of your philosophies of twins, eh.

And you've probably noticed, that if you experienced target shooting in pastlives, you'll be pretty good at them in this one (thanks to the practice). Makes me think of Mozart...age 3 started playing the keyboard, age 5 began composing minuets, at 8 wrote his first three symphonies...etc.

If anyone truly wants to know whether or not reincarnation is true, I can say that for me, by searching it out through the internet and library, I found a wealth of undeniable evidence. And since then have found my own personal evidence within myself. "Nice to meet you, A, likewise, A."