Wiktionary
n. The destructive power of an explosive, measured in megatons.
Usage examples of "megatonnage".
Since each Combatant's team knows only their own Situation-profile and total available megatonnage and since even out in the four-court theater the stockpiled warheads are hidden from view inside the identical white plastic cast-off industrial-solvent buckets all academies and serious players use for drill-balls125 there can be a lot of poker-facing about response-resolve, willingness to go SACPOP, nonnegotiable interests, EM-pulse-immunity, distribution of strategic forces, and commitment to geopolitical ideals.
Note that (Note that's another like compulsitory [sic] term) note that the Combatant's Mean-Value megatonnage will change, slightly, from Eschaton to Eschaton, exactly the way a like hitter's season average will alter just a bit from at-bat to at-bat, depending integrally on what he delivered on his last trip to the plate and whatnot.