I solved this issue by making Modern Tanks so universally time consuming to research that they are effectively out of the game.
Here's how I did it:
MAKE SURE YOU MAKE A COPY OF THIS FILE FIRST
I changed the Techinfos.xml file (in the BTS RTW mod path). I increased the "icost" by 3,000% effectively making it so lengthy to research as to make it impossible to complete during the course of a normal game. This changes the global research cost in production (hammers) to all players.
Don't try to do this in the Techinfos.xml file in the DalesCombatMod path. DCM uses the RTW library of tech research. There is no reference for Modern Tanks or Tech Type 48 (which is the same as Modern Tanks in RTW) in the Techinfos.xml file in the DCM path.
"icost" is the default research cost, before modifiers like difficulty level are applied.
The original "icost" value was 14000. Any RTW mod game, saved or new, like DCM 3.19, will immediately reflect the change.
For example, I loaded my on going RTW/DCM game that had reached April 1930 and the new cost for the research was reflected in the research tree for modern tanks even though I had already researched it. I loaded older games previous to my country having modern tanks and the turns to reach it had increased accordingly. I started a new game and saw the new cost reflected there too.
Code:
<TechInfo>
<Type>TECH_WW2_TECH48</Type>
<Description>TXT_KEY_TECH_WW2_TECH48</Description>
<Civilopedia>TXT_KEY_TECH_WW2_TECHNOLOGY_PEDIA</Civilopedia>
<Help/>
<Strategy>TXT_KEY_TECH_WW2_TECH48_STRATEGY</Strategy>
<Advisor>ADVISOR_MILITARY</Advisor>
<iAIWeight>0</iAIWeight>
<iAITradeModifier>0</iAITradeModifier>
[COLOR="Red"][B]<iCost>420000</iCost>[/B][/COLOR]
<iAdvancedStartCost>6</iAdvancedStartCost>
For reference on the Techinfos.xml file Tags go to
http://modiki.civfanatics.com/index.php/Civ4_XML_Reference
And look for:
Assets\XML\Technologies
Click on "Techinfos"
I'm not a modder and if it weren't for the help I got from
KiwiTT out of New Zealand on several RTW problems I wouldn't have had a clue about how to change XML code and improve my RTW DCM Mod according to my preferences.
If I can figure something like this out then anybody can. Don't be intimidated -change RTW game play according to your liking.
Help out my friend KiwiTT's new mini mod project for RTW by giving him feed back
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"The Weak Shall Perish"