The pashkevil says that because they might soon be taking the yeshiva students out of the yeshivas and uprooting the Torah, we, the roshei yeshivot, must begin training the yeshiva bochurim that if they should have to go to the army, they should know how to bring out the sparks of kedusha hidden there.. We should train the boys that each one should make at least 10 baalei teshuva from our mistaken brethren...etc etc etc
Interestingly, the author of the pashkevil is already admitting that there is holiness in the army...
Secondly, I expect that this is meant more to scare the chilonim into saying the haredi draft isn't worth risking their own kids to religion than to actually prepare such a campaign to create baalei teshuva... If this campaign actually takes off, there might be a counter-campaign to make the haredi boys not frum. On the other hand, if the haredim joining the army almost always go into a separate unit created specifically for haredim, where will they be coming into contact with so many not-frum soldiers that they will be able to try to create 10 baalei teshuva each...