systemctl --type=service --no-pager

[groudie@Bo ~]$ sudo journalctl --unit=<your_network>.service
bash: your_network: No such file or directory
[groudie@Bo ~]$ systemctl --type=service --no-pager
  UNIT                        LOAD   ACTIVE SUB     DESCRIPTION
  accounts-daemon.service     loaded active running Accounts Service
  avahi-daemon.service        loaded active running Avahi mDNS/DNS-SD Stack
  avahi-dnsconfd.service      loaded active running Avahi DNS Configuration Daem
  blk-availability.service    loaded active exited  Availability of block device
  bluetooth.service           loaded active running Bluetooth service
  brltty.service              loaded active running Braille Console Driver
  colord.service              loaded active running Manage, Install and Generate
  cups-browsed.service        loaded active running Make remote CUPS printers av
  cups.service                loaded active running CUPS Printing Service
  dbus.service                loaded active running D-Bus System Message Bus
● dhcpcd.service              loaded failed failed  dhcpcd on all interfaces
  dm-event.service            loaded active running Device-mapper event daemon
  ftpd.service                loaded active running FTPD Daemon
  gpm.service                 loaded active running Virtual console mouse server
  haveged.service             loaded active running Entropy Harvesting Daemon
● ip6tables.service           loaded failed failed  IPv6 Packet Filtering Framew
● iptables.service            loaded failed failed  Packet Filtering Framework
  kmod-static-nodes.service   loaded active exited  Create list of required stat
● krb5-kadmind.service        loaded failed failed  Kerberos 5 administration se
● krb5-kdc.service            loaded failed failed  Kerberos 5 KDC
  lightdm.service             loaded active running Light Display Manager
  lvm2-lvmetad.service        loaded active running LVM2 metadata daemon
  lvm2-monitor.service        loaded active exited  Monitoring of LVM2 mirrors,
● mdadm.service               loaded failed failed  MDADM Event Monitor
  ModemManager.service        loaded active running Modem Manager
  netctl.service              loaded active exited  (Re)store the netctl profile
● NetworkManager-wait-online.service loaded failed failed  Network Manager Wait Online
  NetworkManager.service      loaded active running Network Manager
  nscd.service                loaded active running Name Service Cache Daemon
  ntpd.service                loaded active running Network Time Service
  polkit.service              loaded active running Authorization Manager
  rtkit-daemon.service        loaded active running RealtimeKit Scheduling Polic
  snmpd.service               loaded active running Simple Network Management Pr
  snmptrapd.service           loaded active running Simple Network Management Pr
● speech-dispatcherd.service  loaded failed failed  Speech-Dispatcher an high-le
  svnserve.service            loaded active running Subversion protocol daemon
  systemd-backlight@backlight:intel_backlight.service loaded active exited  Load/Save Screen Backlight B
● systemd-journal-upload.service loaded failed failed  Journal Remote Upload Servic
  systemd-journald.service    loaded active running Journal Service
  systemd-logind.service      loaded active running Login Service
  systemd-networkd.service    loaded active running Network Service
  systemd-random-seed.service loaded active exited  Load/Save Random Seed
  systemd-readahead-collect.service loaded active exited  Collect Read-Ahead Data
  systemd-readahead-replay.service loaded active exited  Replay Read-Ahead Data
  systemd-remount-fs.service  loaded active exited  Remount Root and Kernel File
  systemd-resolved.service    loaded active running Network Name Resolution
  systemd-rfkill@rfkill0.service loaded active exited  Load/Save RF Kill Switch Sta
  systemd-rfkill@rfkill1.service loaded active exited  Load/Save RF Kill Switch Sta
  systemd-rfkill@rfkill2.service loaded active exited  Load/Save RF Kill Switch Sta
  systemd-rfkill@rfkill3.service loaded active exited  Load/Save RF Kill Switch Sta
  systemd-sysctl.service      loaded active exited  Apply Kernel Variables
  systemd-timesyncd.service   loaded active running Network Time Synchronization
  systemd-tmpfiles-setup-dev.service loaded active exited  Create Static Device Nodes i
  systemd-tmpfiles-setup.service loaded active exited  Create Volatile Files and Di
  systemd-udev-trigger.service loaded active exited  udev Coldplug all Devices
  systemd-udevd.service       loaded active running udev Kernel Device Manager
  systemd-update-utmp.service loaded active exited  Update UTMP about System Boo
  systemd-user-sessions.service loaded active exited  Permit User Sessions
  systemd-vconsole-setup.service loaded active exited  Setup Virtual Console
  transmission.service        loaded active running Transmission BitTorrent Daem
  udisks2.service             loaded active running Disk Manager
  ufw.service                 loaded active exited  CLI Netfilter Manager
  upower.service              loaded active running Daemon for power management
  user@1000.service           loaded active running User Manager for UID 1000
  user@620.service            loaded active running User Manager for UID 620
  wpa_supplicant.service      loaded active running WPA supplicant

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

66 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
[groudie@Bo ~]$