I am sorry if this is actually a newb question but...
Ok, I took a break from BD for like 6 months and now I come back to Mars 1 and this is my first and only round as of now, Routhy is reintroducing me to the game, even though I think I can handle it now...
So my question is this, I sent a spam squad to a colony that had JUST come out of protection called something of something (yes, thats his actual name)
I arrive 3 ticks later and to my knowledge no one could have possibly beaten me to it, and note, he had just come out of protection and he was rank 1500 which is the rank of most of the nubs coming out of protection are in M1.
My squads arrive and all of them get slaughtered?? By who? From where?

In the above BR it says that there was another colony's squad there at the same time mine was, and they attacked me and killed me.

In the above picture it shows the person in the top left corner who sent these squads (note he is conquered and I still have my outpost so he didn't attack that) and the person who I was attacking from the radar is in the bottom right corner. How is it possible that my units were slaughtered by his?
Was there something added when I took my BD break that could have made this possible?