|Bolo Mark||XV/BM (Resartus)|
|Year of Introduction||2396|
|Weight||1,500 tons (1,000 tons for the L model, 3,000 tons for the M)|
|Road Speed||65 (89 for the L model, 65 for the M)|
|Sprint Speed||85 (116 for the L model, 85 for the M)|
|Indirect Fire||Tac/Theater (none for the L model)|
1x 25cm Hellbore (35cm on M model)
4x 20cm howitzers
VLS missile system
14x gatling laser Infinite Repeaters (16x on M Model)
(8x 18cm BL mortars on the M Model)
(L model was armed only with Point def/AP)
A quantum leap in Bolo technology, the Mark XV was the standardbearer of the Concordiat during humanity's greatest wave of interstellar expansion. Very few non-human species encountered during this period could match the Mark XV's capabilities; none could exceed them. This was the first Bolo which did not require an onboard human crewman, due to advances in cybernetics and secure communication links (first short-range subspace com capabilities), which permitted increasingly sophisticated computerized pre-battle planning coupled with unjammable remote human control to correct for unanticipated problems. Main armament was one 25cm Hellbore with line-of-sight capability, backed by laser cluster "gatling" infinite repeaters (total of fourteen in the Model B) and four 20cm howitzers in individual secondary turrets. The 25cm Hellbore remained incapable of engaging orbital targets from planets with atmosphere due to as yet unsolved attenuation and dissipation problems with the weapon's plasma bolt "packaging," but there were few planetary targets with which it could not deal. Tactical and theater bombardment capability was roughly equivalent to the Mark XIV 's, but the Mark XV had no strategic bombardment capability. The Mark XV's six track systems each had an independent power train, and the vehicle carried both primary and secondary fusion plants. Cybernetics were divided between two totally independent command centers as protection against battle damage, and durachrome was wholly abandoned in favor of a much tougher flintsteel war hull. Early models of this mark saw the last use of anti-kinetic reactive armor. Major improvements in suspension were required to deal with unparalleled battle weights (1,500 tons in the Model B, rising to over 3,000 in the Model M), but road speed held constant at approximately 65 kph (with brief "sprint" capability of over 80 kph) over the life of this mark, although the "lightweight" Mark XV, Model L, EW platform, at barely 1,100 tons, was 37 percent faster. Cross-country speed was equivalent to road speed except in very rugged terrain. This mark enjoyed a very long, very stable evolutionary history (mainly because the Concordiat didn't run into anything a Mark XV couldn't handle).
Source: A Brief Technical History of the Bolo by Prof. Felix Hermes, Ph.D.