Huddersfield Town 's new faces were on show, but it was old favourite Sean Scannell who ensured victory in their first friendly.
Scannell struck just before the break at Guiseley, where the visitors always looked comfortable and in control against their National League hosts.
Scannell hit a post before he netted, while both Nahki Wells and Kyle Dempsey hit the bar from distance.
Travelling fans got an early first sight of club-record signing Christopher Schindler in blue and white stripes.
The £1.8m German centre-back signed from 1860 Munich was in the starting XI while keeper Joel Coleman, a £100,000 buy from Oldham Athletic, was the only other new arrival on show from the off.
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He was behind a defence of Tommy Smith, Schindler, skipper Mark Hudson and Jason Davidson as Town played their earliest-ever pre-season match.
Jordy Hiwula, the frontman wanted by Walsall, was also in the starting side in an outing which came six days after the squad starting working at PPG Canalside.
They had previously been in a five-day team bonding trip to Sweden, where no football was involved.Five of David Wagner's other new signings, Michael Hefele, Chris Lowe, Ivan Paurevic, Jack Payne and Elias Kachunga, were among the substitutes.
Australian international midfielder Aaron Mooy did not feature, with his season-long loan from Manchester City only being completed the day before.
Wagner's plan was to give each player 45 minutes in the first of five friendlies, with games at Oldham Athletic (July 16) and at home to Liverpool (July 20) next in line.
Town will then take on Werder Bremen and FC Ingolstadt, from whom they have signed striker Kachunga on loan, during the week-long trip to Austria.
The opening Championship game is at home Brentford on Saturday, August 6, with a League Cup first-round tie at Shrewsbury Town the following midweek.
Town made a lively start against Guiseley, knocking the ball about confidently with Scannell to the fore, but there were no real chances in the opening stages.
The visitors did manage to force a string of corners, but the home side worked hard to eliminate any danger.
Philip Billing produced an audacious pass to free Davidson down the left, but the Aussie was ruled offside.
Rajiv van La Parra, whose move from Wolves has been made permanent for £750,000 after last season's loan, was looking lively, as was Hiwula.
And when the latter received another Billing pass and slipped in Scannell on 22 minutes, the wideman shot against the left-hand post.
Guiseley finally unlocked the Town defence after 27 minutes, but Oli Johnson's effort from the left flew across the face of Coleman's goal.
At the other end, Billing had a long-range shot tipped wide by home keeper Dan Atkinson before Wells put a free-kick just over.
Wells then hit the bar with a 30-yard shot before Town claimed the opener their dominance deserved two minutes before the break.
Scannell did the damage, picking up Schindler's pass before shooting in off the same upright he had struck earlier in the half.
Town, as Wagner had promised, fielded a completely different side in the second half, with centre-back Hefele, left-back Lowe, midfielder Paurevic and forwards Payne and Kachunga all in action as well as new development squad keeper Luke Coddington.
Dean Whitehead, usually a midfielder, lined up alongside former Dynamo Dresden man Hefele in central defence.
Guiseley had former Town development keeper Ed Wilczynski, who is also interesting York City, in goal for the second period, and he soon did well to deny Kachunga.
Then Dempsey became the second Town player after Wells to rattle the bar when he took aim from 25 yards out.
Kachunga was wide with an acrobatic overhead kick before Payne and Joe Lolley both tried their luck to no avail.
Powerful Croatian Paurevic, who started pre-season later than his teammates because of the late end to the season for former club FC Ufa, was replaced by Jordan Williams in a planned change on 75 minutes.
Payne came close from a Harry Bunn pass before Lolley curled a shot narrowly wide.
First-half side: Coleman, Smith, Schindler, Hudson, Davidson, Hogg, Billing, Scannell, Hiwula, Van La Parra, Wells.
Second-half side: Coddington, Cranie, Hefele, Whitehead, Lowe, Paurevic (Williams, 75mins), Dempsey, Lolley, Payne, Bunn, Kachunga.