Installing this one is a bit more tricky than the older versions because involves adding 3 extra vehicles, replacing an old one and changing a pedprop.
Also optionally(and very reccomended) is replacing m_m_gunnut_01(ped model) for the soldier model. If you know how to add extra vehicles you should have no problem.

1-Open the following files with notepad++ and add/modify these lines:


TBOGT/content.dat------>add this line: IDE common/data/milvehicles.ide
TBOGT/data/images.txt------->add this line: pc/models/cdimages/milvehicles
TBOGT/data/carcols.dat------>add these 3 lines below policew
								milpatriot,	56,56,56,
								barracks,	56,56,56,
								milsanch,	56,56,56,
TBOGT/data/cargrp.dat------->add in the # POPCYCLE_GROUP_COPS the following vehicles: police3, police4, policeb, avan, apc, milpatriot, milsanch, barracks  # POPCYCLE_GROUP_COPS

common/data/peds.ide-------->search for the M_M_GunNut_01 line and modify the CIVMALE, to COP, it should be like this: 
M_M_GunNut_01,		M_M_GunNut_01_p, 	COP, 		move_gng@afro_b,	GESTURES@MALE,		GESTURES@M_PHONE,	FACIALS@M_LO,		visemes@m_lo,		0, 		move_gng@afro_b,	null,			-1,-1,		PED_TYPE_PLAYER,	M_M_GunNut_01,  	VOICE_PLY_CR
(Remember that this last edit is in the common folder, in the main EFLC folder and that editing it, will affect TLAD too)

common/data/vehicles.ide----->modify the airtug line and change it to this one:
airtug,		airtug,		car,		AIRTUG,		PATRIOT,	VEH@VAN,	VEH@VAN_FO1_FO1,	100,	999,		0.3557,	0.3557,		0,	4,	1.5	,1,	livery+ext_requi+truckfirefx+ext_strong
(this will affect TLAD too)

common/data/handling.dat------>modify the airtug line and change it to this one:
3500.0  5.0   85	0.0 0.0 -0.3   		0.5  5  0.15  1.0 135.0	0.2  0.65 0.7  35.0		1.1  0.85 17.0 0.15 0.49		1.1  0.7  0.9  0.15 -0.23 0.0  0.5  		1.0 1.0 0.8 1.3 	0.0  70000 		440020		0				0
(this will affect TLAD too)

2-Put the file milvehicles.ide in TBOGT/DATA/

3-Put the file milvehicles.img in TBOGT/pc/models/cdimages

4-Replace airtug.wft and airtug.wtd in vehicles.img with the ones included in the folder GTAVCrusader (this change will affect to TLAD too)

5a-Replace m_m_gunnut_01.wdd, m_m_gunnut_01.wft and m_m_gunnut_01.wtd in componentpeds.img with the ones included in the US ARMY folder.
5b-Replace m_m_gunnut_01_p.wdd and m_m_gunnut_01_p.wtd in pedprops.img with the ones included in the US ARMY folder.

6-put the police3.vb in your scripts folder.

7-Play the game, have fun and ¡Try to survive!