diff --git a/library/RemoteTools.cpp b/library/RemoteTools.cpp
index b371d60fa..718d1b181 100644
--- a/library/RemoteTools.cpp
+++ b/library/RemoteTools.cpp
@@ -292,9 +292,9 @@ void DFHack::describeUnit(BasicUnitInfo *info, df::unit *unit,
         if (!unit->custom_profession.empty())
             info->set_custom_profession(unit->custom_profession);
 
-        if (unit->military.squad_index >= 0)
+        if (unit->military.squad_id >= 0)
         {
-            info->set_squad_id(unit->military.squad_index);
+            info->set_squad_id(unit->military.squad_id);
             info->set_squad_position(unit->military.squad_position);
         }
     }
diff --git a/plugins/lua/sort/units.lua b/plugins/lua/sort/units.lua
index d8ae83a38..c124e52d9 100644
--- a/plugins/lua/sort/units.lua
+++ b/plugins/lua/sort/units.lua
@@ -93,7 +93,7 @@ orders.race = {
 
 orders.squad = {
     key = function(unit)
-        local sidx = unit.military.squad_index
+        local sidx = unit.military.squad_id
         if sidx >= 0 then
             return sidx
         end
@@ -102,7 +102,7 @@ orders.squad = {
 
 orders.squad_position = {
     key = function(unit)
-        local sidx = unit.military.squad_index
+        local sidx = unit.military.squad_id
         if sidx >= 0 then
             return sidx * 1000 + unit.military.squad_position
         end
@@ -115,4 +115,4 @@ orders.happiness = {
     end
 }
 
-return _ENV
\ No newline at end of file
+return _ENV
diff --git a/plugins/ruby/unit.rb b/plugins/ruby/unit.rb
index 139a375b2..4fbf75d8d 100644
--- a/plugins/ruby/unit.rb
+++ b/plugins/ruby/unit.rb
@@ -92,7 +92,7 @@ module DFHack
             # filter 'attend meeting'
             not u.specific_refs.find { |s| s.type == :ACTIVITY } and
             # filter soldiers (TODO check schedule)
-            u.military.squad_index == -1 and
+            u.military.squad_id == -1 and
             # filter 'on break'
             not u.status.misc_traits.find { |t| t.id == :OnBreak }
         end
diff --git a/plugins/tweak.cpp b/plugins/tweak.cpp
index 8488ba3e8..b4af2a4ba 100644
--- a/plugins/tweak.cpp
+++ b/plugins/tweak.cpp
@@ -640,7 +640,7 @@ struct military_assign_hook : df::viewscreen_layer_militaryst {
             for (int y = y1, i = i1; i <= i2; i++, y++)
             {
                 auto unit = vector_get(positions.candidates, i);
-                if (!unit || unit->military.squad_index < 0)
+                if (!unit || unit->military.squad_id < 0)
                     continue;
 
                 for (int x = x1; x <= x2; x++)
diff --git a/scripts/siren.lua b/scripts/siren.lua
index 30d3aa07f..4fc574ed0 100644
--- a/scripts/siren.lua
+++ b/scripts/siren.lua
@@ -89,7 +89,7 @@ end
 for _,v in ipairs(df.global.world.units.active) do
     local x,y,z = dfhack.units.getPosition(v)
     if x and dfhack.units.isCitizen(v) and is_in_burrows(xyz2pos(x,y,z)) then
-        if not in_siege and v.military.squad_index < 0 then
+        if not in_siege and v.military.squad_id < 0 then
             add_thought(v, df.unit_thought_type.LackProtection)
         end
         wake_unit(v)