Hello vash, thanks for questioning by the way
Well perhaps as I'm the only one indonesian here's so its my obligation to answer your question.
I've been around for some military defense forum before this one, and a number of foreign members who keep asking the same question like you did are increasing. But its okkay I can understand that.
I can assume you must be doesn't know and didn't observe much about Indonesia before asking those question.
Ok let me start from here..
Do you know indonesia is a country with 741.050 square miles spread and divided into three time zones just like U.S. between Los Angles to New York?
Do you know we also have 5 big island as well to host ground combat like Sumatera, Java, Kalimantan, Sulawesi and West Papua?
Yes, u are right Indonesia is archipelagic nation with 17.537 island in total but more than half of those numbers are unpopulated islands.
So back to your question...
Indonesia have 450.000+ in total active personel from the Army, Navy and Air Force. Also have another 400.000+ troops as reserve. In that number do you really think Indonesian troops does not need APC's?
Do you know Indonesia doesn't have any MBT before this acquisitions?
We have hundred's of light tanks in the Army and Marines but none of them are MBT.
Do you really think 103 Leopard 2 MBT that Indonesia recently buy from Germany is enough for a country with 741.050 squaire miles area to covered?
And this is the most interesting part....
Then what do you think about tiny little red dot on a map country like Singapore? Do you know our tiny neighbours state country Singapore have 182 Leopard 2A4 MBT plus there's a report they will add another 50 Merkava MK4 MBT in their arsenal. Is it suit your logic??
http://singsupplies.com/showthread.php?185220-Singapore-buys-tanks-Merkava-Mk-4
Yes there's an old song sing like they have right to defence because they were surounded by moslem nation (a.k.a. Malaysia and Indonesia) and another bla.. bla.. bla.. and bla.. bla.. bla..
But still considering its size of their country is it suit your logic to have so many MBT in such a tiny city state country like Singapore?
What about Indonesia?
To be honest I personally think the number of 103 Leopard 2 MBT we just recently acquired is ridiculous.
IMO Indonesian Army should have at least 2000 MBT ideally although Indonesia is an archipelagic country considering how far and how big its territory.
Just put one or two tank battalion to guard each of its big island like Sumatra, Java, Kalimantan for example to host ground combat anytime if needed when the aggressor comes. No need to transport those tanks between the islands. Its Indonesian Marines job to do amphibious landing assault not the Army.
Look at our ASEAN neighbours around like Malaysia, Singapore, Thailand, Vietnam, Myanmar, Laos all of this country have MBT (except Philippines). Of course Indonesian Army also want that toy's.
If you ever been traveling to Indonesia for vacation to some of places like Java, Sulawesi, or Papua and knowing for a country at this size doesn't have any MBT for their Army I'm sure you must be saying "what the f**k with this country!!"
About naval power?
Yes, curently Indonesia still upgrading their naval power to meet its standard requirement
Its already stated by our president Joko Widodo, Indonesia should be a maritime power and his administration will support any of it.
These are assets owned by the Indonesian navy's itself
1 LPD Hospital Ship 125m
4 LPD 125m Amphibius Assault
21 LST 90m to 115m (+2 under construction)
55 Aircraft (Include 8 MPA)
2 Submarine (+3 under construction)
6 Frigates (+2 under construction)
10 Guided Missile Corvette
16 ASW Corvette
21 Fast Missile Boat 40m & 60m (equip with C705 and C802 asm)
51 Patrol Craft
12 Minesweeper
2 Hydro-oceanografi vessel
The number of hardwares will keep increasing if I'm adding Marines equipment on the list. its just I'm too lazzy for it, sorry mate
However I'm 10.000% agree with you about Destroyer, that's what Indonesian Navy still lack behind. We desperately need it in large number to balance power with China aggression in our souvereignty Natuna island.
Aircraft carrier? Still long way to go to meet our doctrine, Of course we Indonesian dream about it. it just we focus to be good on self defence first and we already have so many islands with airstrip we can use as unsinkable aircraft carriers, just like what China build in south china sea.
at this moment Indonesia might be doesn't have a powerful naval force and air force to counter balance with its future aggressor. Our more powerful enemy might rule our sky.. our enemy might rule our sea.. but to win a war there must boots on the ground. Thats why everybody love and need tanks. Ground troops always and will always be the last defender.