The spreadsheet I use has been updated since I uploaded that one I linked. Tells you how much military is lost in the attack. Has a SPAL calculator on it. Also has a spot where you input their networth and land (if in GDI), then adjust 3 variables based on the limits of 0-3 alliance slots until you match their expenses. Of course it can't tell you what allies they have for sure and sometimes multiple combinations will work. But in Primary you mostly see Defensive/Intelligence/Research allies, so it lets you make a decent guesstimate and spy when defensive allies can be matched up.