Andronikos Doukas (kaisar's other son) & Crepin built up an army without interference

Summary:
After debate over the strategy to be used with Romanos IV, it was decided to attack him, so as to give him no further opportunity for audacity. Konstantinos Doukas was summoned by his father (Ioannes the kaisar) and asked to gather his forces again and march against Romanos IV . But he refused. Thus Ioannes and Michael VII gave the command to Andronikos Doukas, the kaisar's other son. He was entrusted with the entire eastern command and sent against Romanos. On the very day he was put in command, he took leave of Michael VII and his father the kaisar Ioannes, crossed the Bosporos, spent six days at Chalcedon gathering necessities for the expedition, then went through the East collecting, preparing and training troops and distributing provisions. Together with Robert Crépin he gained all their loyalties by fair treatment, and advanced to Cilicia 
Dates:
1072 
Andronikos Doukas, son of the kaisar Ioannes (Andronikos 61)
  • Appointed domestikos of the East, he was sent against Diogenes (Romanos 4), prepared all the troops distributing provisions to them, together with Robert 101 brought them all to his side, and having thus assembled his forces advanced towards Cilicia (:) καὶ κατὰ μικρὸν ἅπαντας προοικειωσάμενος Attaleiates: History 173.15-22 / 128.17-22
  • Abandoning peace of necessity Michael 7 entrusted him with the entire eastern command and sent him against Romanos 4 (:) ξυμπάσης τε τῆς ἕω τὴν ἀρχὴν πιστεύσας Psellos: Chronographia VIIb 36.1-2, 5-6
  • He first harmonised his army to a united purpose, behaving fairly to each man and adapting his behaviour in a suitable way for all (:) ἑκάστῳ ἐπιεικῶς προσφερόμενος καὶ πρὸς πάντας οἰκείως μεθαρμοζόμενος Psellos: Chronographia VIIb 36.6-8
  • Following his brother (Konstantinos 61)'s refusal to march against Diogenes (Romanos 4), he was asked by his father (Ioannes 62) to lead the expedition, and he prepared at once to leave (:) εὐθὺς ἕτοιμος ἦν πρὸς τὸ ἔργον Bryennios 133.7-9
  • Took leave of the emperor (Michael 7) and the kaisar (Ioannes 62), crossed the Chalcedonian straits, spent six days at Chalcedon gathering what was necessary for the expedition, left and went through the East collecting troops and advanced to Cilicia (on the same day (he was asked to lead the expedition):αὐθημερόν) περιῄει τὴν ἕω καὶ τὰς δυνάμεις συνέλεγε Bryennios 133.10-14
Ioannes Doukas, kaisar (Ioannes 62)
  • Summoned his son Konstantinos 61 and asked him to take his forces and march against Diogenes (Romanos 4) at once, but upon his refusal, Andronikos 61 was asked to go, which he did, taking leave of his father the same day (:) αὖθις τὰς δυνάμεις ἀναλαμβάνειν καὶ κατὰ τοῦ Διογένους χωρεῖν παρεκελεύετο Bryennios 133.5-9
Konstantinos Doukas, son of Kaisar Ioannes (Konstantinos 61)
  • Summoned and asked by his father (Ioannes 62 Doukas) to gather his forces and march at once against Diogenes (Romanos 4), he refused (:) τοῦ δὲ παραιτουμένου Bryennios 133.5-8
Emperor Michael VII Doukas (Michael 7)
  • Andronikos 61 Doukas took leave of him and left for Cilicia to face Romanos 4 Diogenes (:) Συνταξάμενος οὖν αὐθημερὸν τῷ βασιλεῖ Bryennios 133.10
  • Abandoning peace of necessity he gave the command to Andronikos 61 ... entrusting him with the entire eastern command, he sent him against Romanos 4 (:) ξυμπάσης τε τῆς ἕω τὴν ἀρχὴν πιστεύσας Psellos: Chronographia VIIb 36.1-2, 5-6
  • When he found out that Romanos 4 desired and aimed to reign again, he sent troops against him; Romanos was pursued, blinded and sent into exile on a desert island (:) Manasses, Chronicle 6521-6527
Emperor Romanos IV Diogenes (Romanos 4)
  • There was further debate (in Constantinople): some advocated making peace with him, granting him a share in rule and doing nothing more; others advocated war so as to give him no further opportunity for audacity (:) μηδεμίαν αὐτῷ ἀφορμὴν τῆς ἔπειτα θρασύτητος παρασχεῖν Psellos: Chronographia VIIb 35.1-5