Definition of "Red"

The 5th “Red” army corps is also making for Wuting while the 9th “Red” army corps is preparing bamboo rafts for crossing the Kin Sha Kiang (River) northwards to invade south-western Szechuan.

1935 May 18, “Gen. Chiang Kai-shek Urges Full Development of Resources in Yunnan”, in The China Weekly Review‎, volume 72, number 12, page 385, column 1

The policeman who arrests the "Red" does not understand the theories the "Red" is preaching; if he did, his own position as bodyguard of the monied class might seem less pleasant to him.

1941, George Orwell, The Lion and the Unicorn, Pt. I

A Defense Ministry communique said 40 Communist craft were sighted Tuesday off Peikantang, a tiny island in the Matsu group, but fled when the island's guns opened fire. The Matsus are off the Red port of Foochow, opposite the northern tip of Formosa.

1954 September 30, “Nationalist Forces Rout 40 Red Boats”, in The Washington Post and Times Herald‎, volume 77, number 299, page 4, column 2

First reports were that the Reds, in five gunboats and swarms of junks, succeeded in landing on tiny Wuchiu in Formosa Strait, but were beaten off with many captured. […] The attack on Wuchiu, a mile-long, half-mile-wide island 15 miles off the mainland, was the first amphibious operation by the Reds since they began boasting last summer they would "liberate" Formosa.

1954 November 27, “Red Assault on Tiny Isle Beaten Off, Say Nationalists”, in The Daily Colonist‎, volume 96, number 294, Victoria, British Columbia, page 1, columns 6, 7

Teng left China just before the Red takeover to come to this country.

1963 December 18, Chinatown News‎, page 12

Sixty knots? No way, Barnes. The Reds don't have anything that fast.

1989, James Cameron, The Abyss (motion picture)