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Ministry of National Defense (Taiwan)

Taiwan

image by Akira Oyo, 20 March 2014
Source: Ministry of Defense website

Overview
- Ministry of National Defense (de facto 1958-circa 1992)
- Ministry of National Defense (de jure since 1958, de facto since circa 1992)
Ministry of National Defense unit
Army Navy and Air Forces Flags Act changes

See also:

Overview

I found the flag of Minister of National Defense revised in 1958 was different from what we see today, while the flag of Chief of General Staff of Defense was the same with what we see today. And the flag of Vice-Minister of National Defense revised in 1958 was also different, although it was abolished in 1986. So, do you know in which year the design of these military flags were revised after 1964 and before 1985?
Besides, the flag of ROC Navy Honor Guard you posted in 2004 is identical to the Army flag except the blue rectangle. But recently the flag of ROC Navy Honor Guard follows design of the Act of Ensign of the ROC Armed Forces.
So, I wonder that if you ever saw they flew this flag or if there is a photo recorded such a flag?
Akira Oyo, 09 March 2014

From the Wikipedia page the white flags of Minister of National Defense (國防部部長旗), Chief of General Staff of the Armed Forces (參謀總長旗), Deputy Minister of National Defense (國防部次長旗), and Deputy Chief of General Staff of the Armed Forces (參謀次長旗) were adopted by the Naval Flags Act of 1950.
The white flag of Vice Chief of General Staff of the Armed Forces (副參謀總長旗) was adopted by the Naval Flags Act amendment of 1952.
These were officially replaced by the orange flags of Minister of National Defense (國防部部長旗) and Chief of General Staff of the Armed Forces (參謀總長旗) adopted by the Armed Forces Flags Act of 1985. However these two flags have been in use a long time before that - I do not have the exact time, but probably since 1960 - even the draft of the Armed Forces Flags Act of 1985 acknowledged the fact that the old Naval Flags Act (and that of the Army and the Air Force) were hopelessly outdated.
I now believe the flags of Vice-Minister of Defense and Deputy Chief of General Staff of Defense have never existed.
The Army-style Navy Honor Guard flag was used until 1990 (except in 1988, when all three Honor Guard flags were replaced by normal Unit Flags 單位旗 of the three services). Since 1991 the Navy Honor Guard flag has the same design as the Navy unit flag.
Miles Li, 09 March 2014

All the flags on the Wikipedia page you mentioned are 100% accurate because all of them are drawn according to the official documents, and all the sources can be found in the file information.
Akira Oyo, 09 March 2014

Ministry of National Defense (de facto 1986-circa 1992)

image by Akira Oyo and Miles Li, 13 May 2014

Ministry of National Defense (de facto 1986-circa 1992)

image by Akira Oyo and Miles Li, 13 May 2014

Ministry of National Defense unit

since 1962:

image by Akira Oyo and Miles Li, 19 July 2014
de facto 1962-circa 1992

image by Akira Oyo and Miles Li, 19 July 2014
de jure since 1962, de facto since circa 1992

The unit name is written in black letter on the white strip.
Miles Li, 19 July 2014

1958-1962:

image by Akira Oyo and Miles Li, 09 August 2014
de jure 1958-62

image by Akira Oyo and Miles Li, 09 August 2014
de facto 1958-62

The name of the unit is written in black letters on the white strip, and the badge of the unit is on the small yellow flag.
Miles Li, 09 August 2014

Army Navy and Air Forces Flags Act changes

The ROC Ministry of National Defense has just announced several changes regarding the "Army, Navy and Air Force Flags Act".
Changes include:

The "Military Administration Districts Flag" renamed "Armed Forces Reserve Command Flag";
The Guards Flag abolished;
The Army, Navy, Air Force, Logistics and Guards Commander-in-Chief flags abolished, replaced by "Positional Distinguishing Color for Other Senior Officials" of an unknown design.

Miles Li, 18 April 2002

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