In December 1937, Rúiz Jiménez Garrido served in Escuadrilla 3-E-3, which was equipped with Fiat CR.32s

On 23 December, he suffered an accident at Ávila airfield and CR.32 3-53 was destroyed.

Around midday on 24 March 1938, 18 Fiats from all six Spanish CR.32 escuadrillas led by capitán Ángel Salas provided escort for the He 51s and SM.79s attacking Quinto. Between Quinto and Farlete they encountered eleven Ratas and 30 Chatos. In the ensuing combats four Chatos were claimed; capitán Salas, alférez Arístides García López Rengel (1-E-3), brigada Ramón Senra Àlvarez (1-E-3) and Rúiz Jiménez each claiming one. Teniente José Jurado González (3-E-3), flying Fiat No 3-104, was killed in action when Republican fighters shot him down between Caspe and Quinto.
Legion Condor Bf 109s also joined the fray, while He 51s flown by Spanish pilots performed ground attack missions below the swirling dogfight and one of the He 51s were destroyed, although its pilot survived.
At the end of this air battle, Salas almost succeeded in capturing a Chato. He had attacked one of the enemies and, although unable to destroy the machine, he so clearly held the upper hand that the Chato pilot descended to a low altitude and was making for Nationalist lines, with Salas in close attendance. Just as the Chato was about to land, it was attacked by a Bf 109B (No 51) flown by Oberleutnant Wolfgang Schellmann, staffelkapitän of 1.J/88, and destroyed, prompting Salas to lodge a formal complaint with the Legion Condor.
The German Bf 109s from 1.J/88 claimed two more I-15s in this combat when Leutnant Fritz Awe and Unteroffizier Alfred Stark claimed one I-15 each.
Totally the CR.32 pilots claimed four I-15s and five probable and the Bf 109s were credited with three I-15s.
In this battle Government aircraft Nos. CA-006, CA-032, CA-037 and CA-052, piloted respectively by Antonio Sánchez, Benigno Domingo Hueso, Jesús Pérez Pérez and Fernando Villins León, were destroyed and the pilots KIA; teniente Francisco Viñals Guarro and Elías Hernández flying machines Nos. CC-030 and CC-027 collided; and Alfredo Dealbert, aircraft No. CA-038 force-landed outside the airfield.
Teniente Viñals of the 2^a/26 had sortied from Pomar de Cinca airfield and he bailed out and landed between Pina and Osera.
The Government Air Force had not previously lost so many aircraft in a single battle. The Escuadra de Caza N^o 11 claimed four CR.32s and one Bf 109 with one CR.32 and one He 51 as probably destroyed.

Rúiz Jiménez Garrido ended the war with 1 biplane victory.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1938
1	24/03/38	midday	1	I-15 (a)	Destroyed	CR.32		Quinto area	3-E-3

Biplane victories: 1 destroyed.
TOTAL: 1 destroyed.
(a) The Nationalist side claimed seven I-15s (4 by Spanish CR.32s and 3 by 1.J/88) while losing one CR.32 and one He 51. The Government admitted the loss of 6 and 1 force-landed while the Escuadra de Caza N^o 11 claimed four CR.32s and one Bf 109 with one CR.32 and one He 51 as probably destroyed.

Sources:
Air Aces - Christopher Shores, 1983 Presidio Press, Greenwich, ISBN 0-89141-166-6
Air War over Spain - Jesus Salas Larrazabal, 1974 Ian Allan Ltd, Shepperton, Surrey, ISBN 0-7110-0521-4
Fiat CR.32 Aces of the Spanish Civil War - Alfredo Logoluso, 2010 Osprey Publishing, Oxford, ISBN 978-1-84603-983-6
Joaquin Garcia-Morato - Best Ace of Spanish Civil War (WWII Ace Stories) - Mihail Zhirohov, 2003
Spanish Republican Aces – Rafael A. Permuy López, 2012 Osprey Publishing, Oxford, ISBN 978-1-84908-668-4
The Legion Condor - Karl Ries and Hans Ring, 1992 Schiffer Publishing, ISBN 0-88740-339-5
Wings Over Spain - Emiliani Ghergo, 1997 Giorgio Apostolo Editore, Milano
Additional information kindly provided by Alfredo Logoluso and Ondrej Repka.