--- data/helpdata.txt.orig	Wed Feb  3 09:36:07 1999
+++ data/helpdata.txt	Wed Feb  3 14:14:07 1999
@@ -592,7 +592,7 @@
 defence strengths are increased by 50%.  Also, damaged land units
 which stay in town for one turn are completely restored.
 
-Note that discovering Gunpowder and Combustion will obsolete any
+Note that discovering Gunpowder and Mobile Warfare will obsolete any
 existing Barracks.
 
 Variant 1: Affects all units, not just land units.
@@ -603,7 +603,7 @@
 defence strengths are increased by 50%.  Also, damaged land units
 which stay in town for one turn are completely restored.
 
-The discovery of Combustion will make Barracks II obsolete.
+The discovery of Mobile Warfare will make Barracks II obsolete.
 
 Variant: Uses Barracks variant (see Barracks).
 ---
--- data/default/buildings.ruleset.orig	Fri Jan 29 21:57:55 1999
+++ data/default/buildings.ruleset	Wed Feb  3 14:08:46 1999
@@ -34,8 +34,8 @@
 "Aqueduct",           0, "Construction",        80, 2,  0, "None"
 "Bank",               0, "Banking",            120, 3,  0, "None"
 "Barracks",           0, "None",                40, 1,  0, "Gunpowder"
-"Barracks II",        0, "Gunpowder",           40, 1,  0, "Combustion"
-"Barracks III",       0, "Combustion",          40, 1,  0, "None"
+"Barracks II",        0, "Gunpowder",           40, 1,  0, "Mobile Warfare"
+"Barracks III",       0, "Mobile Warfare",      40, 1,  0, "None"
 "Cathedral",          0, "Monotheism",         120, 3,  0, "None"
 "City Walls",         0, "Masonry",             80, 0,  0, "None"
 "Coastal Defense",    0, "Metallurgy",          80, 1,  0, "None"