How do you build the tamiya brick wall set?

I am assuming that you want to stack the wall segments on top of each other? End to end they interlock....
Top to bottom I would maybe do one of a couple of things. Two part thick epoxy would act as a glue and 1/35 scale mortar. Or I would drill a couple of corresonding holes on each piece and use a piece of wire to act as mortise and tenon joint. Then fill the crease with some putty.

thanks